Main Entry: mor·pheme Pronunciation: 'mor-"fEm Function: noun Etymology: French morphème, from Greek morphE form Date: 1926 : a distinctive collocation of phonemes (as the free form pin or the bound form -s of pins) having no smaller meaningful parts - mor·phe·mic /mor-'fE-mik/ adjective - mor·phe·mi·cal·ly /-mi-k(&-)lE/ adverb